2 cups orange juice concentrate
2 cups half and half
2/3 cup light corn syrup
1/2 cup orange marmalade
4 teaspoons orange rinds grated
1 teaspoon vanilla extract
In a large bowl, whisk orange juice, half-and-half, corn syrup, marmalade, orange rind and vanilla until well blended. Pour into a 13 x 9 x 2-inch baking pan. Cover and freeze for 1 1/2 to 2 hours or until frozen 1 inch from edge and center is slushy.
Break into pieces. Transfer to a chilled large mixer bowl. With chilled beaters, beat at low speed until smooth but not melted. Spoon into a freezer container. Cover and freeze at least 1 hour or up to several days before serving.